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Definition of upset verb from the Oxford Advanced American Dictionary

      

    upset

     verb
    verb
    NAmE//ʌpˈsɛt//
     
    Verb Forms present simple I / you / we / they upset
     
    he / she / it upsets
     
    past simple upset
     
    -ing form upsetting
     
     
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  1. 1to make someone/yourself feel unhappy, anxious, or annoyed synonym distress upset somebody/yourself This decision is likely to upset a lot of people. Try not to let him upset you. Don't upset yourself about it — let's just forget it ever happened. it upsets somebody that… It upset him that no one had bothered to tell him about it. it upsets somebody to do something It upsets me to think of her all alone in that big house. Thesaurusangry
    • mad
    • furious
    • upset
    • indignant
    • irate
    These words all describe people feeling and/or showing anger.
    • angry feeling or showing anger:Please don't be angry with me. Thousands of angry demonstrators filled the square.
    • mad [not before noun] (informal) very angry:He got mad and walked out. She's mad at me for being late.
    • furious extremely angry:He was furious at having been taken out of the game. He was furious with her for ruining the party.
    • upset somewhat angry or annoyed:I was quite upset with him for being late.
    • indignant feeling or showing anger and surprise because you think that you or someone else has been treated unfairly:She was very indignant at the way she had been treated.
    • irate very angry:irate customers an irate letter
    Patterns
    • angry/mad/furious/upset/indignant about/at something
    • angry/furious/upset with somebody (for doing something)
    • angry/mad/furious/upset/indignant that
    • to get angry/mad/furious/upset
    • to make somebody angry/mad/furious
  2. 2upset something to make a plan, situation, etc. go wrong He arrived an hour late and upset all our arrangements.
  3. 3upset someone's stomach to make someone feel sick after they have eaten or drunk something
  4. 4upset something to make something fall over by hitting it by accident She stood up suddenly, upsetting a glass of wine.
  5. Idioms
    upset the apple cart
     
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    to cause problems for someone or spoil their plans, arrangements, etc.
See upset in the Oxford Advanced Learner's Dictionary